<p class="byline">
    
    <g:link
            controller="home"
            action="blog"
            id="${postInstance?.author?.id?.encodeAsHTML()}"
            title="${postInstance?.title}"
            width="400">
        ${postInstance.author.encodeAsHTML()}
    </g:link>
     发表于
     <g:formatDate format="yyyy-MM-dd" date="${postInstance.displayDate}"/>
</p>